This image should allow you to identify the DVI ports on the computer and the monitor. So long as they are the same you would be much better using a single DVI cable rather than an HDMI - DVI adapter.
I believe OldPhil was referring to the computer or its video card rather than the monitor. I too have never heard of a monitor needing drivers but, as always, I am willing to be corrected !
DVD-D dual link, then - thanks, that's what I thought. Unfortunately, there's no DVI port on the PC, which I thought was slightly odd: it's a real mixture of old and new, still with P/S2 connections for keyboard and mouse (even I got rid of my last P/S2 keyboard years ago because I couldn't find a computer that would take it!), then your nice, up-to-date HDMI and DisplayPort connections, but nothing in between, so to speak. (And Dell still seem to be spec'ing them that way!)
Aha. It was one of those fancy monitors with loads of USB ports and so on on it, so I thought there might be a possibility. Will see if the PC needs some drivers.
HDMI and DVI use the same signalling protocol, so using an adapter to go from one to the other is usually fine. Monitors seldom require a genuine device driver ( a few odd ones do) but what is often referred to as the driver issued by manufacturers is a configuration file used by the video driver to understand the operating modes a monitor is capable of. Since it's possible the older monitor is not plug&play, it may just be receiving a signal of the wrong scan frequency or resolution. A workaround could be to set a low resolution screen manually in Windows (e.g. 1024x768 60Hz), which any monitor should be able to display. Or a Google search on the monitor's model number should let you find out what resolutions the monitor is capable of, and setting a suitable one before changing monitors should work.
Thanks. Yes, the resolution is currently very high, so possibly that is the problem. I'll drop it down to something more primitive while I've got the modern monitor hooked up, and see if that makes a difference.